But in a new interview with PORTER Edit, the actress explained that she never dreamt of having such career longevity. "At the beginning of my career, in my mid-twenties, everyone told me that I should expect it all to be over at 40," Watts told the publication. She continued, "At that time, there were only a few people who seemed to scrape through and have careers beyond that."

If anything, 50-year-old Watts's career is on an upward trajectory right now, especially since she was cast as the lead in the prequel to Game of Thrones. Written by English screenwriter Jane Goldman, who Watts calls "completely brilliant," the Mulholland Drive star explained, "I am literally not allowed to say anything about it." But she did give some insight into how she feels about the universe she's stepping into.

"I didn’t start watching until I was approached about this job," Watts told PORTER Edit. She continued, "But my brother [photographer Ben Watts], who is heavily into it, told me, 'Under no circumstances are you going to turn this down.'" Luckily, Watts was a fan of the show, and accepted the gig.

As for how she's going to cope with the extra attention that starring in the Game of Thrones prequel will inevitably bring, Watts revealed, "I still have fears about that." She also admitted, "I don’t really know what to prepare for."

Considering the immense success of HBO's flagship show, Watts's inimitable talent is about to reach a humungous audience, and that can only be a good thing.